Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 40/63?"
921 × 4063 is 40147.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×40/63 9/21×80/63 9/42×40/63 27/21×40/63 9/63×40/63 45/21×40/63 63/21×40/63
© everydaycalculation.com